Centripugal air or gas injector



July 25, 1933.

A. R. KUNZ 1,919,847 CENTRIFUGAL AIR OR GAS INJECTOR Filed p l 4, 1933 2 Sheets-Sheet l l k, l I E I") n I s I 5 J K o Q 5 g 1* N a 03 F4 o 0 Nb z- I July 25, 1933. R KUNZ 1,919,847

CENTRIFUGAL AIR OR GAS INJECTOR Filed April 4, 1933 2 Sheets-Sheet 2 all] I J- \Li' l I Q I q- Invcnlor' flllorney Patented July Z5, 1933 nnorrnnfzuivz, or, enonn rx, A IZONA ,1; i

cnirrnrruennnin oa easemen s j Application filed April 4,

ofthe centrifugal type and has for one of its. important objects to provide, in a-nianner as'hereina'fter set forth, a device of this character which' comprises a novel construction of rotary. impeller through the medium of which a suitable liquid is utilized for actuating the air, gas or other fluid.

Other objects of the invention are to provide a centrifugal: injector of the aforementioned character which will be simple in construction, strong, durable, highly e'flicient and reliable in operation, compact, light'in weight and which maybe manufactured and operated at "low cost. i

All o'f'the foregoing and still further objects and advantages of the invention will become apparent from a study of thetfol- 9 lowing specification.,fltaken in connection with the accompanying drawings wherein like characters of reference designate corresponding parts throughout the several views,

and wherein z+ V r -Figure 1 is a'vi'ew in vertical longitudinal section through an injector constructed in accordance with the present invention.

Figure 2 is a fragmentary view in horizontal section through a portion of the housing, showing a portion of the impeller.

Figure 3'is a fragmentary view, partially in side elevation and partially in vertical section, showing a portion of the impeller.

Figure fl: is a sectional view, taken substantially on the line 4l of Figure 3.

Figure 5 is a sectional view, taken substantially on the line 5-5 of Figure 3.

Referring nowto the drawings in detail,

. it will be seen that the embodiment of the I invention which has been illustrated comprises ahousing which is designated generally by the reference numeral 1, said housing being formed to provide an annular 1;; chamber 2 having an outlet 3 j and including a pair of complemental half sections 4 which are detachably secured together, as at 5.

Projecting from opposite sides of the housing 1 are centrally located liquid inlets 6 having ports 7 therein. The housing 1 may I packing 16 is provided for preventing leak 1933. Serial no; 664,438, M v be mounted on any suitable isupporting means. j 2' Connected to the inletsl6 of the housing 1 are liquid. reservoirs 8,.only one ofwhich has been shown. The reference numeral 9 designates generally a centrifugal impeller which is mounted for rotation in v the housing 1. The impeller 9 is'fixed on one end portion of awdrive shaft :10 which extends .rotatably into thehousing l through one of" the'sections 4 thereof, said drive shaft passing through. the liquid -'reservoir 8" on that side of 'the housing. Any suitable means -may be employedfor driving the shaft 10.

The impeller "9 includes a pair of s'ide abutting disks llwhich "are secured together in any suitable manner,said disks including hub portions 12. One of the hublportions 12 ireceivesthe drive shaft-:10 while'the OthQr Of said hubportions-has connected w thereto for rotation with the impeller 9 an air or gas inlet tube 13which extends ro- -tatably through the reservoir 8 onthat side of the housing 1. The outer end portion of the rotary tube -11 is journaledin' a sta-" tionary intake 14 which is mounted on] the adjacent reservoir 8 The reference numeral 15' designatesa suitable check-valve on the inlet end of the intake pipe 1 1. A suitable f age around the rotary air intake tube 13 from the adjacent liquid reservoir 8.

The impeller 9 further includes substantially semi-lanceolate blades or vanes 17 which are. mounted in staggered relation to eachother on the outer sides of the disks 11.

The vanes 17 are arranged in a manner to define radial passages 18, as illustrated to advantage in Figure 3 of the drawings. Air chambers 19 are provided in the inner .portions of the vanes 17 said chambers communicating with the passages 18 through diverging ports 20. The outer portions-of the vanes 17 have chambers 21 therein. Ra-

dial passages 22 are 'formed in the impeller 05- l 9, saidpassagescommunioating with the tube '13 for receivingair therefrom and also c om-' municating, at their outer ends, with the. chambers 19 for the discharge of the air. thereinto. i

ceiving tank through suitable pipes 23 which.

are connected to the bottom or a lower portion of said receiving tank.

Briefly, the operation of the injector is as, ollows When the impeller 9 is rotated the liquid is thrown by centrifugal force outwardly into the annular chamber 2. As the liquid rushes past the ports 20 through the pas sages 18, air Will be drawn from the atmosphere through the inlet members 13 and 14 and be discharged also into the chamber 2.

'Of course, if the inlet members 13 and 14 communicate with a supply of gas other than the atmosphere, this particular gas Will be discharged into the chamber 2. The liquid and air or other gas then pass from the chamber 2 through the outlet 3 to the aforementioned receiving tank Where they separate, the liquid, of course, settling in the bottom of saidreceiving tank. The air or other gas may then be Withdrawn from the receiving tank as desired and in any suitable manner. The liquid returns to the reservoirs 8 through the pipes 23 to beused again.

It is believed that the many advantages of an injector constructed in accordance With the present invention Will be readily understood, and although the preferred embodiment of the invention is as illustrated and described, it is to be understood that changes in the details of construction and in the combination and arrangement of parts may be resorted to which will fall Within the scope of the invention as claimed.

What is claimed is l. A centrifugal injector comprising a .2 i v l 1,919,847

housing having an annular chamber therein and further having an outlet passage communicating With the chamber, means for supplying a liquid to the housing, an impeller rotatably mounted in the housing, said impeller having radial passages, therein, means for supplying a fluid to the passages, said impeller including laterally projecting vanes spaced from each other and defining passages therebetween for the liquid, said vanes having ports therein communicating With the first and second named passages.

2. A centrifugal fluid injector comprising a housing having an annular chamber therein, means for introducing a liquid into the housing, an impeller rotatably mounted in the housing, said impeller having radial air passages therein and including laterally projecting, spaced vanes defining radial pas- "Sages communicating with the chamber, said vanes having chambers therein communicating with the first named passages and further having diverging ports therein'communicating With the second named passages and With the second named chambers, and means for conducting the fluid into the impeller.

3. A centrifugal injector comprising a housing having an annular chamber therein and further having an outlet passage communicating with the chamber, a reservoir connected With the housing for supplying a liquid thereto, a drive shaft extending rotatably into the housing, an impeller fixed on the shaft and operable in the housing, said impeller having air passages therein, an air inlet pipe extending rotatably through the reservoir and connected to the impeller for the introduction of air into the passages, and means for supplying liquid to the reservoir. v

ADOLPH R. KUNZ. 

